PWS

*mḥl - to forgive (?) (Kogan 2015: 462; Appleyard 1977:51)

The root is most prominantly represented by PES *mḥl ‘to swear’.

Hebrew
mḥl - to forgive, to pardon (Jastrow 761)
pB.
Jewish Palestinian Aramaic
mḥl - to forgo, to remit a debt (DJPA 300)
Sabaic
mḥly - oath (?) (SD 84)